TY - JOUR
T1 - Effects of temperature, packaging and electron beam irradiation processing conditions on the property behaviour of Poly (ether-block-amide) blends
AU - Murray, Kieran A.
AU - Kennedy, James E.
AU - McEvoy, Brian
AU - Vrain, Olivier
AU - Ryan, Damien
AU - Cowman, Richard
AU - Higginbotham, Clement L.
PY - 2014/6/1
Y1 - 2014/6/1
N2 - The radiation stability of Poly (ether-block-amide) (PEBA) blended with a multifunctional phenolic antioxidant and a hindered amide light stabiliser was examined under various temperatures, packaging and electron beam processing conditions. FTIR revealed that there were slight alterations to the PEBA before irradiation; however, these became more pronounced following irradiation. The effect of varying the temperature, packaging and processing conditions on the resultant PEBA properties was apparent. For example, rheology demonstrated that the structural properties could be enhanced by manipulating the aforementioned criteria. Mechanical testing exhibited less radiation resistance when the PEBA samples were vacuum packed and exposed to irradiation. MFI and AFM confirmed that the melting strength and surface topography could be reduced/increased depending on the conditions employed. From this study it was concluded that virgin PEBA submerged in dry ice with non-vacuum packaging during the irradiation process, provided excellent radiation resistance (20.9% improvement) in contrast to the traditional method.
AB - The radiation stability of Poly (ether-block-amide) (PEBA) blended with a multifunctional phenolic antioxidant and a hindered amide light stabiliser was examined under various temperatures, packaging and electron beam processing conditions. FTIR revealed that there were slight alterations to the PEBA before irradiation; however, these became more pronounced following irradiation. The effect of varying the temperature, packaging and processing conditions on the resultant PEBA properties was apparent. For example, rheology demonstrated that the structural properties could be enhanced by manipulating the aforementioned criteria. Mechanical testing exhibited less radiation resistance when the PEBA samples were vacuum packed and exposed to irradiation. MFI and AFM confirmed that the melting strength and surface topography could be reduced/increased depending on the conditions employed. From this study it was concluded that virgin PEBA submerged in dry ice with non-vacuum packaging during the irradiation process, provided excellent radiation resistance (20.9% improvement) in contrast to the traditional method.
KW - Crosslinking and chain scission
KW - Electron beam irradiation
KW - Mechanical, thermal, structural and surface properties
KW - Packaging and processing conditions
KW - Poly (ether-block-amide)
KW - Stabilisers
UR - http://www.scopus.com/inward/record.url?scp=84898070158&partnerID=8YFLogxK
U2 - 10.1016/j.msec.2014.03.021
DO - 10.1016/j.msec.2014.03.021
M3 - Article
C2 - 24863239
AN - SCOPUS:84898070158
SN - 0928-4931
VL - 39
SP - 380
EP - 394
JO - Materials Science and Engineering C
JF - Materials Science and Engineering C
IS - 1
ER -